linux-kernel - Re: [PATCH v2 03/11] ARM: tegra: Set the sound card model that alsaucm expects

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Date:	Fri, 16 Jan 2015 09:50:47 +0100
From:	Tomeu Vizoso <tomeu.vizoso@...labora.com>
To:	Stephen Warren <swarren@...dotorg.org>
Cc:	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	Dylan Reid <dgreid@...omium.org>,
	Simon Glass <sjg@...omium.org>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Thierry Reding <thierry.reding@...il.com>,
	Alexandre Courbot <gnurou@...il.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 03/11] ARM: tegra: Set the sound card model that
 alsaucm expects

On 15 January 2015 at 18:22, Stephen Warren <swarren@...dotorg.org> wrote:
> On 01/15/2015 09:12 AM, Tomeu Vizoso wrote:
>>
>> Patches are on its way to add a config file to alsaucm for the Nyan
>> boards. Use the same card ID that alsaucm will expect.
>>
>> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
>> ---
>>   arch/arm/boot/dts/tegra124-nyan-big.dts | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/tegra124-nyan-big.dts
>> b/arch/arm/boot/dts/tegra124-nyan-big.dts
>> index 43e58a4..9a9cffe 100644
>> --- a/arch/arm/boot/dts/tegra124-nyan-big.dts
>> +++ b/arch/arm/boot/dts/tegra124-nyan-big.dts
>> @@ -1976,9 +1976,9 @@
>>         };
>>
>>         sound {
>> -               compatible = "nvidia,tegra-audio-max98090-nyan-big",
>> +               compatible = "nvidia,tegra-audio-max98090-nyan",
>>                              "nvidia,tegra-audio-max98090";
>
>
> If all the boards that are derived from Nyan truly have identical audio HW
> (or at least any differences can be described by this binding), then it
> seems fine to add "nvidia,tegra-audio-max98090-nyan" to the compatible
> value.



> However, I don't see a reason to remove the board-specific compatible value
> "nvidia,tegra-audio-max98090-nyan-big"; we should always include all the
> values that are relevant.

Ok.

>> -               nvidia,model = "Acer Chromebook 13";
>> +               nvidia,model = "GoogleNyan";
>
>
> Why not just name the UCM config file after the ASoC card name that's
> already in use? Perhaps it's not likely to be unique enough though:-(

Yeah, that would be A13, which isn't terribly useful.

Regards,

Tomeu

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